Serum creatine kinase level is a poor predictor of muscle function after injury

Serum creatine kinase and dorsflexion torque levels were measured in New Ze aland White rabbits 1, 2, 7, 14, or 28 days after a single bout of eccentri c exercise (n=26), No significant correlation was observed between creatine kinase activity and torque across time periods (P>0.15) and the regression relationship described only about 8% of the experimental variability. Thes e data demonstrate that there exists a poor correlation between serum creat ine kinase levels and skeletal muscle function after eccentric exercise.